Flashcards in Mock Deck (55):

1

## Corresponding angles (f angle)...

### Are equal

2

## Alternate angles(z angle)...

### Are equal

3

## Co-interior angles(c angle)...

### Add up to 180

4

## What is the general equation of a straight line?

### y=mx + c

5

## What is the gradient equation?

### Rise/run

6

##
How do you find the equation of a line when you’re given the gradient and the point that it goes through?

Gradient = 2

Point it goes through = (2,9)

###
y=mx + c

9=2(2)+c

9=4+?

C=5p

Answer: y=2x + 5

7

## How do you calculate the gradient from 2 coordinates?

### y-y/x-x

8

## What are the angles in perpendicular lines?

### The negative reciprocal of one another

9

## What is the negative reciprocal of 1?

### -1/2

10

## How do you work out the midpoint of a line segment?

### (x+x/2,y+y/2)

11

## How do you work out the interior angle of a shape?

### (n-2) x 180

12

## How do you work out exterior angles?

### 360/no of sides

13

## What do you need when you’re adding fractions?

### A common denominator

14

## What do you need when you’re subtracting fractions?

### A common denominator

15

## How do you divide fractions?

### Skip flip multiply

16

## How do you multiply fractions?

### Multiply the numerators together and multiply the denominators together

17

## What are the 2 steps of simplifying algebraic fractions?

###
1. Factorise

2. Cancel

18

## What are the 4 types of transformations?

###
Rotation

Reflection

Translation

Enlargementt

19

## What is the object in transformation?

### The original shape

20

## What is the image in transformation?

### The shape that is produced

21

## What is translation?

### Sliding a shape

22

## What is needed in translation?

###
A vector

23

## In a vector, what does the top digit tell you?

### How far the shape moves to the left/right

24

## In a vector, what does the bottom digit tell you?

### How far the shape moves up/down

25

## What are the 3 requirements for rotation?

###
Centre of rotation

Clockwise/anti-clockwise

Angle

26

## What 2 things do you need for enlargement?

###
Centre of enlargement

Scale factor

27

## How do you find the centre of enlargement?

### Join up the corners of the object and the image

28

## What does a negative scale factor mean?

### Enlarges and rotates

29

## What does a scale factor of 1/2 mean?

### Gets smaller and closer to centre

30

## Area of similar shapes?

### Ratio squared

31

## Volume of similar shapes?

### Ratio cubed

32

## What diagram is used to find out the factors of a number?

### Factor tree diagram

33

## In a Venn diagram, how do you find out the HCF?

### Multiply all the numbers in the middle

34

## In a Venn diagram, how do you find the LCM?

### Multiply everything

35

## What is X to the power of 1/2?

### The square root of X

36

## What is anything to the power of 0?

### 1

37

## What is X to the power of -2?

### 1/X squared

38

## What do you do to estimate?

### Round everything to 1 sig fig

39

## How do you estimate the root of a number?

### Find the two closest square numbers and estimate the number from there, depending on which square number it’s closer to

40

## How do you convert recurring decimals into fractions?

###
1. Multiply it by a factor of 10 until it lines up

2. Do 10x-x

3. 9x = ?

4. x = ?/x

41

## What is the equation for sin θ?

### Sin θ=opposite/hypotenuse

42

## What is the equation for cos θ?

### Cos θ=opposite/adjacent

43

## What is the equation for tan θ?

### Tan θ=opposite/adjacent

44

## How do you work out the missing angle in trigonometry?

### Sin-1( )

45

## What is the area of a parallelogram?

### Base x perpendicular height

46

## How do you work out the area of a trapezium?

###
Half the sum of the parallel sides

Times the distance between them

47

## How do you work out the area of a kite?

### Width X height/2

48

## What is the area of a circle?

### PiR squared

49

## What is the Pythagoras equation?

### A² + B² =C²

50

## How do you use Pythagoras to find the length of a line?

### Make the line into a right angled triangle

51

## What is the equation for speed?

### Distance/time

52

## How do you work out the speed on the distance time graph?

### The gradient

53

## What is the gradient on a speed time graph?

### Acceleration

54

## How do you work out the distance travelled on a speed time graph?

### The area underneath

55